Agda-2.3.0: A dependently typed functional programming language and proof assistant

Agda.TypeChecking.Irrelevance

Contents

Description

Irrelevant function types.

Synopsis

Documentation

unusableRelevance :: Relevance -> Bool

data Relevance see Agda.Syntax.Common

unusableRelevance rel == True iff we cannot use a variable of rel.

inverseComposeRelevance :: Relevance -> Relevance -> Relevance

inverseComposeRelevance r x returns the most irrelevant y such that forall x, y we have x moreRelevant (r composeRelevance y) iff (r inverseComposeRelevance x) moreRelevant y (Galois connection).

ignoreForced :: Relevance -> Relevance

For comparing Relevance ignoring Forced.

irrToNonStrict :: Relevance -> Relevance

Irrelevant function arguments may appear non-strictly in the codomain type.

Operations on Arg.

hideAndRelParams :: Arg a -> Arg a

Prepare parts of a parameter telescope for abstraction in constructors and projections.

modifyArgRelevance :: (Relevance -> Relevance) -> Arg a -> Arg a

modifyArgRelevance f arg applies f to the argRelevance component of arg.

inverseApplyRelevance :: Relevance -> Arg a -> Arg a

Used to modify context when going into a rel argument.

applyRelevance :: Relevance -> Arg a -> Arg a

Compose two relevance flags. This function is used to update the relevance information on pattern variables a after a match against something rel.

Operations on Context.

workOnTypes :: TCM a -> TCM a

Modify the context whenever going from the l.h.s. (term side) of the typing judgement to the r.h.s. (type side).

doWorkOnTypes :: TCM a -> TCM a

Call me if --experimental-irrelevance is set.

workOnTypes' :: Bool -> TCM a -> TCM a

Internal workhorse, expects value of --experimental-irrelevance flag as argument.

applyRelevanceToContext :: Relevance -> TCM a -> TCM a

(Conditionally) wake up irrelevant variables and make them relevant. For instance, in an irrelevant function argument otherwise irrelevant variables may be used, so they are awoken before type checking the argument.

wakeIrrelevantVars :: TCM a -> TCM a

Wake up irrelevant variables and make them relevant. For instance, in an irrelevant function argument otherwise irrelevant variables may be used, so they are awoken before type checking the argument.